Slide Description
Slide 1:
COAL HANDLING PLANT OBJECTIVE: Coal Handling Plant is a plant which handles the coal from its receipt from Coal mines to transporting it to Boiler and store in Bunkers. It also processes the raw coal to make it suitable for Boiler operation A typical coal handling plant in any power plant shall have the following processes in sequence depending on the capacity of the plant. Unloading process Feeding Process Screening Process Crushing Process Stacking Process Reclaiming Process Bunkering Process These processes are explained in successive pages along with figures and flow diagrams. Other important accessories in coal handling plant like magnetic separators and suspended magnets are explained at the end.
Unloading process :
Unloading process Normally thermal power station receives the coal by three modes of operation By Railway By Road By Arial ropeways Aerial ropeway is available only to the power stations which are near the coal mines. Cost of coal transportation by road is much higher than that for rail Transport and hence most of the coal requirement of the power stations is fulfilled by railway transport by Wagon Tipplers or by BOBR (Bottom Open Bottom Discharge) Wagons.
Slide 3:
For coal handling plant, wagon tippler arrangement is provided in most of the power plants where bottom discharge wagon are not feasible. Wagon tipplers are at present available to unload 20 tips per hour of 55 ton capacity wagons. A typical Wagon Tippler is shown in the next page. Wagon Tipplers These are the giant machines having gear boxes and motor assembly and are used to unload the coal wagons into coal hoppers in very less time (e.g.20 wagons/hr. or more)
Slide 5:
Track Hopper Track Hoppers are mainly used for coal storage & handling in power plants. The coal is generally transported from coal mines either by BOBR wagons (Bottom Open Bottom Discharge), or by Top open wagons & rarely by trucks. A standard Track